A pattern of working time in which there are three shifts a day, and the work force is divided into three groups, each of whom permanently work one type of rostered shift.

For example in a discontinuous system providing 24hrs cover for 5 days a week, one teams work Permanent (8hr) Nights, another work Permanent (8hr) Afternoons,  the other work Permanent (8hr) Mornings.

Three Team / Crew / Set / Shift Fixed